Bayly is a rare English given name believed to originate from the Old English word 'bægel', meaning 'berry'. While not traditionally common in English naming practices, Bayly gained popularity among Quakers in 19th-century America and has been used by notable individuals such as actor Bayly Sellers and musician Bayley Maher-Jones. Its potential metaphorical meanings of 'enclosure' or 'protection' come from the Old English word 'bæglian'. Despite its uniqueness, Bayly has never ranked among the top 1000 most popular names in the United States since records began in 1879.